Oil-burner.



J. P. ROBERTSON.

OIL BURNER.

APPLICATION FILED MAR. 5. 1912.

Patented Sept. 12, 1916.

.u .n k N .C C, C

Jv WJIIII OIL-BURNER.

Specification of Letters Patent.

Patented Sept. 12, 19116.

Application led March 5, 1912. Serial No. 681,679.

To all whom t may concern.'

Be it known that I, JOHN PATON ROBERT- soN, a subject of the King of Great Britain, having resided in the United States one year last past and having declared my intention of becoming a citizen thereof, now residing in the city and county of San Francisco, State of California, have invented a new and useful Oil-Burner, of which the following is a specification.

My invention relates to an oil burner which is adapted to be employed for heating purposes in connection with land, marine or any other kind of boiler furnaces, and one of the main objects of my invention is to devise a burner in conjunction with which novel means are employed for regulating the strength or length of the flame and also to provide a burner tip which will produce complete atomization of the oil.

With the above in view, my invention consists of a novel burner for oil or other liquid fuel wherein the oil unmiXed with air or other gases is heated to any desired degree and preferably maintained in a compressed, heated and liquid state until it is discharged from the atomizer, novel means being provided for varying the length Of the iiame.

It further consists of novel means for regulating the burner to obtain any desired iiame without changing the pressure at the pump or altering the burner tip.

It further consists of a novel construction of a burner in which the burner tip is provided with a conical aperture with which is adapted to cooperate a novel construction of a regulating valve, said tip being preferably countersunk at its discharge end in order to insure the proper combustion at the front of the furnace.

It further consists of novel means for indicating the open position of the valve.

It further consists of a. novel construction of a burner tip in which a desired number of ports open at any desired angle into a valve controlled discharge passage.

It further consists of other novel features of construction, all as will be herinafter fully set forth. e

For the purpose of illustrating my invention, I have shown in the accompanying drawing one form thereof which is at present preferred by me, since the same has been found in practice to give satisfactory and reliable results, although it is to be understood that the various yinstrumentalities of which my invention consists can be variously arranged and organized and that my invention is not limited to the precise arrangement and organization of these instrumentalities as herein shown and described.

Figure 1 represents a sectional elevation of an oil burning system in conjunction with which my novel burner may be employed, and also showing my novel construction of burner and the novel means employed for regulating the length of the flame. Fig. 2 represents a sectional elevation of a burner and controlling means therefor in detached position. Fig. 3 represents a sectional plan view of the burner tip seen in Fig. 2 the section being taken through the ports. Fig. 4 represents a perspective view of the burner tip in detached position.

Similar numerals of reference indicate corresponding parts in the figures.

Referring to the drawings The furnace, 1, having the combustion chamber, 2, wall, 3, inlet passage, 4l, front, 5, air-preheating chamber, 6, damper, 7, and inlet, 8, is disclosed as substantially the same as that disclosed in the patent to Knut M. Dahl, No. 1,055,715 dated March 11, 1913, and the thimble, 9, sleeve, 10, fastening, 11, damper, 12, handle, 13, conduit, 11, pump, 15, heater, 16, and conduits, 17, 18 and 19, are also disclosed as substantially the same as those parts disclosed in said patent, and need no special description.

2O designates a conduit which is connected with a casing 21 having a chamber 22 therein.

23 designates a conduit secured to the casing 21 and communicating with the chamber 22 and having removably secured to its forward end a burner casing or body 24, which, in the present instance, is shown as being in threaded engagement therewith, and provided at its forward end with a recess 25, the walls of which are tapering and in the present instance diverge toward their outer end.

26 designates my novel burner tip consisting preferably of an integral piece of material, the rearwardly extending `portion of which is tapered or conical, as indicated at 27, and intermediate its ends the tip is provided with an annular iiange 28 adapted to seat On the end of the casing 24 andbe secured with respect thereto by means of a nut 29 in threaded engagement with the casing 21 and having a shoulder 30 adapted to the packing nut 40 engage the front face of the flange 28, as will be clearly understood by reference to Fig. 2. The reawardly extending portion of the tip is provided with an aperture 31 which merges into a recess or chamber 32, the walls of which may extend at any desired angle with respect to the aperture 31.

33 designates ports opening into the recess 32 and through the wall of the burner tip at any desired angle, it being understood that any desired number of these ports may be employed.

34 designates an annular groove or recess in the chamber 32 which in some cases it is advantageous to employ, but which it is not necessary to employ at all times and in manycases arising inr practice, this annular groove may be dispensed with. The recess 32 lcommunicates with the discharge port 35, the 'outer walls of which are flaring or countersunk, as indicated at 36, in order to insure combustion at the front of the furnace.

i 37 designates a valve stem which passes through the casing 21, the conduit 23 and through the aperture 31 in the burner tip 26, the forward end of said stem being provided With the valve 38 which is shown, in the present instance, as of a conical contour inorder to conform to the walls of the recess 32, it being understood that the walls of the'recess 32 and also the operative surface of the valve 38 may have any desired angle given thereto. The valve stem 37 is threaded as at 39 thereby adapting the same to be longitudinally adjusted with respect to the packing nut 40 which, in the present instance, has threaded engagement with the casing 21 and is provided with a chamber 41 for lubricating material, the end of said valve stem 37 being preferably of reduced diameter and passing through the end of which latter has secured thereto a cap nut 42 between which and the end of the packing nut 40 is located a gasket 43 of any desired type. Theend of the valve stem 37 is squared or otherwise adapted to have fixed thereto an operating handle 44 and, in the presentinstance, the end of the valve 37, is squared to receive a handle or hand-wheel 44 which latter is maintained in assembled positionby means of a nut 45 l and a pin 46.

47 designates an indicating arm carried by the casing 21 and having its freel end in proximity to the calibrations or indicating data 48 on the operating handle 44 whereby the amount of opening of the valve 38 will be visibly indicated.

. The operation of my novel burner will now be apparent and is as follows :The oil is placed under pressure by the pump 15 if desired and then if desired the oil may be heated to a desired temperature in the heater 16 so that the oil unmixed with air or other gases passes through the conduit 20 into the chamber 22 thence through the conduit 23 into the chamber 25 formed between the casing 24 and the walls of the burner tip 26, whereby the oil will pass to the ports 33 into the groove 34 if the same is employed and into the chamber 32 and therefrom through the discharge port 35 and owing to the counter-sunk portion 36 the combustion directly in front of the burner will be insured. The walls of the countersuuk portion 36 may have any desired angle given thereto.

It will be apparent that the length and strength of the fire may be regulated by rotating the operating handle or wheel 44 thereby causing the longitudinal movement of the valve stem 37 which will cause the valve 3S to be moved toward or away from the restricted discharge port and tlnls vary the strength and length of the flame so that a large or small flame may be produced by a simple manipulation of the operating handle, it being evident that the 1ndicating arm 47 will visibly indicate to the operator the amount of opening of the valve and thereby the vlength of the llame.

It will be apparent that the fuel passing through the conduit 23 may be heated to any desired temperature and maintained at any desired pressure and owing to my novel construction of burner and regulating means therefor the burner may be readily and quickly adjusted for any desired ire or length of flame without changing the pressure on the fuel or changing the burner tip.

Other modes of applying the principle of my invention may be employed for the mode herein explained. Change may therefore be madeJ as regards the mechanism thus disclosed, provided the principles of construction set forth, respectively, in the following claims are employed.

` Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is

1. A hydrocarbon burner, comprising a body`having a passage therethrough, the forward end of which is of outwardly ilaring conical formation, a detachable tip having an outwardly extending flange seated on the end of said body and provided with a rearwardly directed conical extension, of less diameter than its inclosing chamber, said tip having a longitudinally extending aperture therethrough, the rear portion of which is cylindrical and terminates forwardly in a conical discharge passage or valve seat, a valve stem having its forward portion slidingly mounted in and guided by the cylindrical passage in -said tip and having its forward end conical and coacting with itsV conical seat to forma conical outlet chamber, said ti'phaving forwardly directed inclined ports discharging tangentially into said conical chamber, means exterior of said body to adjust said valve, and a nut carried by said body and engaging said {iange to secure the tip to the body.

2. A hydrocarbon burner, comprising a body having a passage therethrough, the forward end of which is of outwardly flaring conical formation, a detachable tip having an outwardly extending ange seated on the end of said body and provided with a rearwardly directed conical extension, of less diameter than its inclosing chamber, said tip having a longitudinally extending aperture therethrough, the rear portion of which is cylindrical and terminates forwardly in a conical discharge passage or valve seat, a valve stem having its forward portion slidingly mounted in and guided by the cylindrical passage in said tip and having its forward end conical and coacting with its conical seat to form a conical outlet chamber, said tip having forwardly directed inclined ports discharging tangentially into said conical chamber, means exterior of said body to adjust said valve, a conduit communicating with said body, a casing communicatingwith said conduit and with a source of fuel supply, a nipple carried by said casing, said valve stem being in threaded engagement with said nipplel and contained within said casing and conduit, a handle operatively connected with said valve, and provided with calibrations, and an indicating device in proximity to said calibrations to visibly indicate the position of the valve.

JOHN PATON ROBERTSON. Vitnesses:

MAURICE ASHER, JNO. J. OTooLE.

Copies of this patent may be obtained for tive cents each, by addressing the Commissioner` of Patents,

Washington, D. C. 

